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→Destructive Testing
*Saw-Cutting <br />A crossing pattern is cut with a fine saw into the contact tip. Areas that are not bonded fall off in pieces.<br />
*Metallographic Micro-section <br />In a metallographic micro-section perpendicular to the contact surface wetting defects can also be made visible <xr id="fig:CdO tip on Cu carrier"/> <!--(Fig. 3.14) --> which however are only indicative of the brazing temperature and brazing time.<br />
<figure id="fig:CdO tip on Cu carrier">
[[File:CdO tip on Cu carrier.jpg|right|thumb|Mechanical Braze joint with voids. Ag/CdO tip on Cu carrier.]]
